3
Technical specifications
Input:
RS-485 and RS-232,
Selection:
With terminal connections
Galvanic isolated from power
Max distancies:
RS-485, 1000 m
RS-232, 20 m
Number of meters in one loop:
1 with RS-232
1-32 with RS-485
Data
8 bits, 1 stop, no parity
Adresses:
0...99
Baud rate:
300, 600, 1200, 2400, 4800,
9600 and 19200 bauds
General specification:
Display
6-num. bright red LED,
digit height 20 mm
Power supply
85..240 VAC
or 12..32 VDC/ 24VAC
Protection
IP65 with gasket
Case dimensions 130 x 180x 80 mm
Ambient temp
-10..+50 °C
Weight
500g
Order codes:
2800-2071-24VDC
Power 24 V (12..32 VDC)
2800-2071-230VAC
Power 85..240VAC
(without options)
General Description
Model 2800-2071 is steered by serial signal RS232 or
RS485. You may select red or green 6-digit display.
Serial bus is galvanic isolated from both processor
and power supply. In configuration stage you can set
address, Baud rate and what display shows without
steering when power supply is connected.
RS232 signal allows only one device to serial port,
max. distance 20 m. RS485 signal is reliable up to
1000 m. You may connect to one bus 32 addressable
meters. Check sum is added to Nokeval SCL-
communication protocol but you can also disable it in
configuration stage.
Sending and last device must have terminal resistor
corresponding to impedance of twisted cable, typically
110 ohm.
The field display 2800-2071 is a part of 2000 product
series and can be changed to other type of meter by
simply changing the input card. All input and output
cards of 2000 panelmeter series are available.
Model 2071 for serial signals
